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• 500 SERIE*STALLATION INSTRUCTIONS <br /> 2. Installation of 500 Series Controller and 5005 Shear Valve Actuator <br /> The 500C Controller and 5005 Shear Valve Actuator must be wired into the dispenser power <br /> circuit and should be connected at the dispenser junction box (if Marconi Encore dispensers are <br /> being used, use the provided 1" explosion-proof junction box to access the incoming power <br /> conduit). If insufficient hubs are available at the dispenser junction box, install an explosion- <br /> proof "T" fitting or a small explosion-proof junction box prior (this should be done before <br /> installing the dispenser). Be sure to use explosion-proof unions with all connections to facilitate <br /> replacement. <br /> All conduit seals, fittings and enclosures must be Class I, Division 1 rated per <br /> NEC Article 501 and any applicable local regulations. <br /> The wiring diagram for the 500C Controller and 500S Shear Valve Actuator is located below: <br /> Output to <br /> Sensors <br /> 500C 500S <br /> Controller Shear Valve <br /> Actuator <br /> _ Use available <br /> CONDUIT FROM CIRCUIT outlets <br /> BREAKER TO DISPENSER <br /> G 1iAtdM4 G <br /> 110V Hot (LI) 3 101' 3 <br /> Neutral <br /> Ground <br /> DISPENSER JUNCTION BOX <br /> Page 6 <br />